gdc.h

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/* GDCHART 0.94b  GDC.H  12 Nov 1998 */

/*
General header common to chart (xy[z]) and pie
*/

#ifndef _GDC_H
#define _GDC_H

#include <math.h>
#ifdef GDC_INCL
#include "gd.h"
#include "gdfonts.h"
#include "gdfontt.h"
#include "gdfontmb.h"
#include "gdfontg.h"
#include "gdfontl.h"
#endif

#ifndef TRUE
#define TRUE    1
#define FALSE   0
#endif

#define GDC_NOVALUE                     -MAXFLOAT
#define GDC_NULL                        GDC_NOVALUE

#define ABS( x )                        ( (x)<0.0? -(x): (x) )
#define MAX( x, y )                     ( (x)>(y)?(x):(y) )
#define MIN( x, y )                     ( (x)<(y)?(x):(y) ) 

#define GDC_NOCOLOR                     0x1000000L
#define GDC_DFLTCOLOR           0x2000000L
#define PVRED               0x00FF0000
#define PVGRN               0x0000FF00
#define PVBLU               0x000000FF
#define l2gdcal( c )        ((c)&PVRED)>>16 , ((c)&PVGRN)>>8 , ((c)&0x000000FF)
#define l2gdshd( c )        (((c)&PVRED)>>16)/2 , (((c)&PVGRN)>>8)/2 , (((c)&0x000000FF))/2
static int                                      _gdccfoo1;
static unsigned long            _gdccfoo2;
#define _gdcntrst(bg)           ( ((bg)&0x800000?0x000000:0xFF0000)|    \
                                                          ((bg)&0x008000?0x000000:0x00FF00)|    \
                                                          ((bg)&0x000080?0x000000:0x0000FF) )
#define _clrallocate( im, rawclr, bgc )                                                                                                         \
                                                        ( (_gdccfoo2=rawclr==GDC_DFLTCOLOR? _gdcntrst(bgc): rawclr),    \
                                                          (_gdccfoo1=gdImageColorExact(im,l2gdcal(_gdccfoo2))) != -1?   \
                                                                _gdccfoo1:                                                                                                      \
                                                                gdImageColorsTotal(im) == gdMaxColors?                                          \
                                                                   gdImageColorClosest(im,l2gdcal(_gdccfoo2)):                          \
                                                                   gdImageColorAllocate(im,l2gdcal(_gdccfoo2)) )
#define _clrshdallocate( im, rawclr, bgc )                                                                                                      \
                                                        ( (_gdccfoo2=rawclr==GDC_DFLTCOLOR? _gdcntrst(bgc): rawclr),    \
                                                          (_gdccfoo1=gdImageColorExact(im,l2gdshd(_gdccfoo2))) != -1?   \
                                                                _gdccfoo1:                                                                                                      \
                                                                gdImageColorsTotal(im) == gdMaxColors?                                          \
                                                                        gdImageColorClosest(im,l2gdshd(_gdccfoo2)):                             \
                                                                        gdImageColorAllocate(im,l2gdshd(_gdccfoo2)) )

/* ordered by size */
enum GDC_font_size { GDC_pad     = 0,
                                         GDC_TINY    = 1,
                                         GDC_SMALL   = 2,
                                         GDC_MEDBOLD = 3,
                                         GDC_LARGE   = 4,
                                         GDC_GIANT   = 5,
                                         GDC_numfonts= 6 };             /* GDC[PIE]_fontc depends on this */

typedef enum {
                         GDC_DESTROY_IMAGE = 0,                 /* default */
                         GDC_EXPOSE_IMAGE  = 1,                 /* user must call GDC_destroy_image() */
                         GDC_REUSE_IMAGE   = 2                  /* i.e., paint on top of */
                         } GDC_HOLD_IMAGE_T;                    /* EXPOSE & REUSE */

#ifdef GDC_INCL
struct  GDC_FONT_T      {
                                        gdFontPtr       f;
                                        char            h;
                                        char            w;
                                        };

typedef enum { GDC_JUSTIFY_RIGHT,
                           GDC_JUSTIFY_CENTER,
                           GDC_JUSTIFY_LEFT } GDC_justify_t;

void    GDCImageStringNL( gdImagePtr, struct GDC_FONT_T*, int, int, char*, int, GDC_justify_t );
void    load_font_conversions();
short   cnt_nl( char*, int* );
#endif

#ifdef GDC_LIB
#define EXTERND extern
#define DEFAULTO(val)
extern struct   GDC_FONT_T      GDC_fontc[];
#else
#define EXTERND extern
#define DEFAULTO(val)
#endif

/**** COMMON OPTIONS ********************************/
#ifndef _GDC_COMMON_OPTIONS
#define _GDC_COMMON_OPTIONS

#define EXTERND extern
/*
EXTERND char                            GDC_generate_gif        DEFAULTO( TRUE );
EXTERND GDC_HOLD_IMAGE_T        GDC_hold_img            DEFAULTO( GDC_DESTROY_IMAGE );
EXTERND void                            *GDC_image                      DEFAULTO( (void*)NULL );        
*/

extern char GDC_generate_gif;
extern GDC_HOLD_IMAGE_T  GDC_hold_img;
extern void *GDC_image;
#endif

/****************************************************/


void    GDC_destroy_image( void* );
void    out_err( int                    GIFWIDTH,
                                 int                    GIFHEIGHT,
                                 FILE*,
                                 unsigned long  BGColor,
                                 unsigned long  LineColor,
                                 char                   *str );

#endif 

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